8 PROCEEDINGS OF THE NATIOI^TAL MUSEUM vol. 73 



above. The distingi.iishing character is the presence of long fine 

 hairs on the posterior and ventral surfaces of the fore femora and 

 tibiae. Erkirgus pilimmmis Hendel is the only known species of the 

 genus and occurs in Peru. It is entirely 3^ellow in color and similar 

 in most respects to Dryoinyzothea setinervis Hendel 



The genotype from which the description was made is a male and 

 it is possible the female may not have long hairs on the forelegs. 



Genus ALLOMINETTIA Hendel 



For discussion of this genus see under Deutominettio) in this paper. 



Genus SCUTOLAUXANIA Hendel 



This genus has the scutellum with hairs above, and the stem of 

 veins 2 and 3 setulose as in Xenochcbetina Malloch. The thorax has 

 two pairs of postsutural dorsocentrals, and the arista is long haired. 

 Scutolameania pUoscidellaHs Hendel is the only known species of the 

 genus; it occurs in Peru. A yellow species resembling AUogripho- 

 neura nigromacwlata Hendel except that there are no black spots at 

 apex of the scutellum. It is unknown to me. 



Genus RHABDOLAUXANIA Hendel 



There are very slight distinctions given for this genus, the princi- 

 pal being the lack of ocellar bristles, and the very strong orbitals, of 

 which the anterior pair is longest. Rhdbdolauxania schnusei Hendel, 

 is a yellow species, with six dark spots on each wing, the one at apex 

 of second vein being very large. Bolivia and Peru. Rhabclolaiixania 

 laevifrons Hendel, is a smaller species, with less conspicuously marked 

 wings, the spot at apex of second vein being very small. Peru. 



FREYIA, new genus 



This genus resembles Lauxania Latreille in many respects, but is 

 readily distinguished from it by the much shorter third antennal 

 segment, slightly incurved anterior orbitals, very short ocellars, con- 

 spicuous transverse depression below middle of face, lack of pre- 

 sutural (posthumeral) bristle, and the presence of but one pair of 

 postsutural dorsocentrals and no acrostichals. The sixth wing vein 

 is also extremely short, barely extending beyond anal cell. In Hen- 

 del's key it runs to Asilostomu but it is readily distinguished from it 

 by the shape of the head, presence of but one pair of dorsocentrals, 

 etc. 



I dedicate the genus to Dr. R. Frey, who has done some fine work 

 in this and related families of Diptera. 



Genotype. — The following species. 



